Paper-elevator.



PATENTED NOV. .14, 1905.

J. G. HAMMER. PAPER ELEVATOR. APPLICATION FILED An. 21. 1905.

. wiinzss es JOHN C, HAMMER, OF DETROIT, MICHIGAN.

PAPER-ELEVATOR.

v Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed April 27, 1905. Serial No- 257,590.

To all whom it may concern.-

Be it known that I, JOHN C. HAMMER, a citizen of the United States, anda resident of Detroit, in the county of Wayne and State of Michigan,have invented a new and Improved Paper-Elevator, of which the followingis a specification.

This invention relates to elevators for raising sheets of printing-paperto the feed-table of front-delivery and other printing-presses and theobjects of my improvements are to provide an elevator for this purposethat may be easily and quickly raised and lowered, thus avoiding stopsof the press, to provide an elevator which will readily hold one dayssupply of paper, and to provide an elevator of this kind that may beattached to the operating mechanism of the press, so that it may beoperated in connection with the same. I attain these objects by theconstruction illustrated in the accompanying drawings, in which Figure 1is a side view of the elevator. Fig. 2 is an end view of the same. Fig.3 is an enlarged detail of the platform. Fig. 4 is a side view of theoperating mechanism.

Fig. 5 is an end view of the same. Figs. 6

and 7 are details of the operating mechanism. Similar referencecharacters refer to like parts throughout the several views.

The operators of the usual front-delivery printing-presses used in thebetter class of' printing, such as magazine and fine catalogue work, arecalled upon to carry the paper up a short flight of steps to thefeeding-platform. This consumes a number of minutes each time, whichloss is repeated many times each day, as the operator cannot carry aheavy load up the steps. In small establishments it does not pay to havea separate helper for this work. The elevator here shown is adapted tobe placed adjacent to the feeding end of the press. The paper is placedon the platform at the beginning of each days run and is raised asdesired.

In thedrawin s, 1 represents two flanges or feet, into whic the uprights2 are secured, preferably by screwing, when the frame is made of tubing.The upper cross-piece 3 is secured to the uprights by means of theelbows 4. On the cross-piece 3 the wheels 5 are journaled. The lowerends of the uprights are connected by the cross-piece 6, which screwsinto the Ts 7.

Slidable on the upri hts 2 are the sleeves 8, which connect to t ecrosses 9. Short lengths of tubing 10 screw into these crosses and intothe Ts 1.1. ed across by tubes 15, and the Ts are provided withset-screws 12, which serve to secure the short tubes 13, which areadapted to slip into the Ts in place. The tubes 13 screw into elbows 14,which are in turn connected across by the tubes 1.5. These tubes andconnections form a frame to support the platform for the paper, and thisframe consists, mainly, of four parallel tubes which eX- These Ts areconnecttend across the width of the elevator, the two outer tubes beingremovable to narrow the frame. The platform is built up of the centralportion 18 and the two side leaves 19, which are permitted to hang downwhen one of the cross-tubes and its connections are removed, as shown inFig. 3.

A rope passes over each of the wheels 5, one end of which is connectedto the metal strap 20 on its side of the platform, which strap isconnected to the two inner cross-tubes 15, as shown in Fig. 3.

Secured to one of the uprights 2 and to its flange 1 is a gear-case 21,provided with bearings 22 for the shaft 23. The other end of this shaftis journaled in the bearing 24, which is secured to the other upright 2.On this shaft are secured two drums 25, adapted to wind up the ropes 26,and so raise the frame and platform.

On the shaft 23 is secured the worm-wheel 27. This wheel meshes with theworm 28, secured to the shaft 29, which shaft is journaled in the smallframe 30. A shaft 31 is journaled in bearings 32 on the other side ofthe case from the shaft 23. This shaft 31 carries the bevel-gear 33,which meshes with the bevel-gear 34, which is secured to the shaft 29.The frame 30, which carries the shaft 29, is provided with a bearing 35,which is journaled onthe shaft 31, so as to hold the frame in positionrelative to the shaft 31. The other end of the frame 30 is usually heldin place by the bolt which passes through the frame 30 and thegear-case; but when it is desired to lower the elevator-p1atform insteadof the slow method of turning back the worm-gear 27 by means of the worm28, bevel-gears 34 and 33, and the driv ing mechanism of the shaft 31the bolt 35 is removed, the frame 30 lifted until the teeth of theworm-wheel 27 no longer mesh with the worm-wheel 28, when the weight ofthe platform and its frame will cause them to descend. As all parts aremade light, no

damage is done by allowing the elevator platform to run down,particularly when the ropes 26 are of wire.

' press.

A wheel 36, having handles or exterior spokes, is secured to the outerend of shaft 31, so the mechanism may be manually operated. On the shaft31 is secured the ratchet-wheel 37. A lever 38 is pivoted on the shaft31, and its lower end is connected to the link 39, which connects to thedriving mechanism of the The pawl 40 is carried by the upper end of thelever 38. This pawl is held in operative position by the spring 41,which presses against the shoulder 43. An arm 42 projects from the upperside of the pawl, to which may be secured a light rod or other desirableconnection by means of which the pressman on his platform may throw thepawl into and out of engagement with the ratchet-wheel.

The operation of the elevator is as follows: The platform having beenlowered, the desired amount of paper is piled thereon and the platformis raised to the desired position by means of the hand-wheel 36. As thepress is started, the load is raised to the proper height and thepaper-stock is rolled off onto the feed-board, the platform being raisedby means of the lever 38 and the pawland-ratchet mechanism. Should thefeed be too fast, the pawl is temporarily thrown out.

Having now explained my construction, what I claim as my invention, anddesire to secure by Letters Patent, is-

l'QtIn an elevator, the combination of two uprights, sleeves slidablethereon, cross-pieces connected to said sleeves, other connectingcross-pieces extending between the uprights, a cross-bar at the upperends of the uprights, wheels journaled on said cross-bar, a shaftjournaled at the lower portions of the uprights, drums secured on saidshaft, ropes extending over the wheels on the cross-bar and connectingto the drums, straps connecting said ropes to the cross-bars carried bysaid sleeves, a platform carried by said crossbars, and mechanism foroperating said shaft.

2. In an elevator, the combination of uprights, sleeves slidablethereon, a frame extending between said sleeves, said frame comprisingparallel tubes and connections for their ends, the outer tubes beingremovable,

a platform carried by said frame, said platform formed of hinged leaves,a cross-bar connecting the upper ends of the uprights, wheels journaledon said cross-bar, a shaft journaled in bearings secured to saiduprights, rope-drums secured to said shaft, ropes extending from saiddrums over said wheels and connecting to said frame carrying theplatform, and gears to operate said shaft.

3. In an elevator, the combination of uprights, a platform slidablethereon, a crossbar connecting the upper ends of the uprights, wheelsjournaled on said cross-bar, a case secured to the lower end of oneupright, a bearing secured to the other upright, a shaft journaled insaid case and bearing, a worm-wheel secured to said shaft, a secondshaft journaled in said case, a bevel-gear carried thereon, a framepivoted on said second shaft, a cross-shaft carried thereby, a bevelgearsecured to the cross-shaft and meshing with the bevel-gear on the secondshaft, a worm carried by the cross-shaft and adapted to mesh with theworm-gear, said cross-shaft frame adapted to be moved to en age or disengage the worm and wheel, an means to drive said shafts.

4. In an elevator, the combination of uprights, sleeves slidablethereon, a frame connected to said sleeves, a platform resting on saidframe, a cross-bar connecting the upper ends of said uprights, wheelsjournaled on said cross-bar, a case secured to one upright,

a bearing secured to the other upright, a shaft journaled in said caseand bearing, drums secured to said shaft, ropes extending from saiddrums over said wheels and connecting to the frame carryin the platform,a gear mounted on said sha t within the case, and mechanism to operatesaid gear. a In testimony whereof I have signed m name to thisspecification in the presence of two subscribing witnesses.

JOHN C. HAMMER. Witnesses:

EDWARD N. PAGELSEN, RALPH E. PRESTON.

